Synthesis, Characterization, and Catalytic Properties of Magnetic Fe(3)O(4)@FU: A Heterogeneous Nanostructured Mesoporous Bio-Based Catalyst for the Synthesis of Imidazole Derivatives

In this protocol, Fucoidan (FU), a fucose-rich sulfated polysaccharide extracted from brown algae Fucus vesiculosus was used for in situ preparation of magnetic Fe(3)O(4)@FU. Nanoco magnetic properties of Fe(3)O(4)@FU were investigated by energy dispersive X-ray (EDX) spectroscopy, X-ray diffraction...

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Autores principales: Banazadeh, Maryam, Amirnejat, Sara, Javanshir, Shahrzad
Formato: Online Artículo Texto
Lenguaje:English
Publicado: Frontiers Media S.A. 2020
Materias:
Acceso en línea:https://www.ncbi.nlm.nih.gov/pmc/articles/PMC7736414/
https://www.ncbi.nlm.nih.gov/pubmed/33335887
http://dx.doi.org/10.3389/fchem.2020.596029
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author Banazadeh, Maryam
Amirnejat, Sara
Javanshir, Shahrzad
author_facet Banazadeh, Maryam
Amirnejat, Sara
Javanshir, Shahrzad
author_sort Banazadeh, Maryam
collection PubMed
description In this protocol, Fucoidan (FU), a fucose-rich sulfated polysaccharide extracted from brown algae Fucus vesiculosus was used for in situ preparation of magnetic Fe(3)O(4)@FU. Nanoco magnetic properties of Fe(3)O(4)@FU were investigated by energy dispersive X-ray (EDX) spectroscopy, X-ray diffraction (XRD), Fourier transform infrared spectroscopy (FT-IR), field emission scanning electron microscopy (FESEM), transmission electron microscopy (TEM), Brunauer–Emmett–Teller (BET) adsorption method, and vibrating sample magnetometer (VSM). The catalytic activity of Fe(3)O(4)@FU was employed for the synthesis of tri- and tetra-substituted imidazoles through three- and four-component reactions respectively, between benzyl, aldehydes, NH(4)OAc and benzyl, aldehydes, NH(4)OAc, and amine under reflux in ethanol. It is worth nothing that excellent yields, short reaction times, chromatography-free purification, and environmental friendliness are highlighted features of this protocol.
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spelling pubmed-77364142020-12-16 Synthesis, Characterization, and Catalytic Properties of Magnetic Fe(3)O(4)@FU: A Heterogeneous Nanostructured Mesoporous Bio-Based Catalyst for the Synthesis of Imidazole Derivatives Banazadeh, Maryam Amirnejat, Sara Javanshir, Shahrzad Front Chem Chemistry In this protocol, Fucoidan (FU), a fucose-rich sulfated polysaccharide extracted from brown algae Fucus vesiculosus was used for in situ preparation of magnetic Fe(3)O(4)@FU. Nanoco magnetic properties of Fe(3)O(4)@FU were investigated by energy dispersive X-ray (EDX) spectroscopy, X-ray diffraction (XRD), Fourier transform infrared spectroscopy (FT-IR), field emission scanning electron microscopy (FESEM), transmission electron microscopy (TEM), Brunauer–Emmett–Teller (BET) adsorption method, and vibrating sample magnetometer (VSM). The catalytic activity of Fe(3)O(4)@FU was employed for the synthesis of tri- and tetra-substituted imidazoles through three- and four-component reactions respectively, between benzyl, aldehydes, NH(4)OAc and benzyl, aldehydes, NH(4)OAc, and amine under reflux in ethanol. It is worth nothing that excellent yields, short reaction times, chromatography-free purification, and environmental friendliness are highlighted features of this protocol. Frontiers Media S.A. 2020-12-01 /pmc/articles/PMC7736414/ /pubmed/33335887 http://dx.doi.org/10.3389/fchem.2020.596029 Text en Copyright © 2020 Banazadeh, Amirnejat and Javanshir. http://creativecommons.org/licenses/by/4.0/ This is an open-access article distributed under the terms of the Creative Commons Attribution License (CC BY). The use, distribution or reproduction in other forums is permitted, provided the original author(s) and the copyright owner(s) are credited and that the original publication in this journal is cited, in accordance with accepted academic practice. No use, distribution or reproduction is permitted which does not comply with these terms.
spellingShingle Chemistry
Banazadeh, Maryam
Amirnejat, Sara
Javanshir, Shahrzad
Synthesis, Characterization, and Catalytic Properties of Magnetic Fe(3)O(4)@FU: A Heterogeneous Nanostructured Mesoporous Bio-Based Catalyst for the Synthesis of Imidazole Derivatives
title Synthesis, Characterization, and Catalytic Properties of Magnetic Fe(3)O(4)@FU: A Heterogeneous Nanostructured Mesoporous Bio-Based Catalyst for the Synthesis of Imidazole Derivatives
title_full Synthesis, Characterization, and Catalytic Properties of Magnetic Fe(3)O(4)@FU: A Heterogeneous Nanostructured Mesoporous Bio-Based Catalyst for the Synthesis of Imidazole Derivatives
title_fullStr Synthesis, Characterization, and Catalytic Properties of Magnetic Fe(3)O(4)@FU: A Heterogeneous Nanostructured Mesoporous Bio-Based Catalyst for the Synthesis of Imidazole Derivatives
title_full_unstemmed Synthesis, Characterization, and Catalytic Properties of Magnetic Fe(3)O(4)@FU: A Heterogeneous Nanostructured Mesoporous Bio-Based Catalyst for the Synthesis of Imidazole Derivatives
title_short Synthesis, Characterization, and Catalytic Properties of Magnetic Fe(3)O(4)@FU: A Heterogeneous Nanostructured Mesoporous Bio-Based Catalyst for the Synthesis of Imidazole Derivatives
title_sort synthesis, characterization, and catalytic properties of magnetic fe(3)o(4)@fu: a heterogeneous nanostructured mesoporous bio-based catalyst for the synthesis of imidazole derivatives
topic Chemistry
url https://www.ncbi.nlm.nih.gov/pmc/articles/PMC7736414/
https://www.ncbi.nlm.nih.gov/pubmed/33335887
http://dx.doi.org/10.3389/fchem.2020.596029
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